[USER (data scientist)]: Great job on the function! Now, we should create a dataframe to store the results. We can then loop through Federer's opponents to determine Raonic M.'s performance. Additionally, could you provide more information on my following query: What is the win rate of Raonic M. on hard surfaces when playing against Tsonga J.W.? 

A. 100%
B. 33.33%
C. 0%
D. 66.67%
E. None of above

[YOU (AI assistant)]: